Trimming mechanism for sewing-machines.



J. P. WEIS. TRIMMING MECHANISM FOR SEWING MACHINES.

APPLIOATION FILED D120. 29, 1910.

1,016,590. Patented Feb.6,1912.

2 SHEETS-SHEET 1.

WITNESSES VENTOR J. P. WEIS.

TRIMMING MECHANISM FOR SEWING MACHINES. APPLICATION FILED DBO. 29, 1910.

1,()16,590. Patented Feb. 6, 1912.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

JOHN P. wnrs, or NYACK, NEW YORK, ASSIGNOR To LUGIUS 1v. LITTAUER, orGLOVERSVILLE, NEW YORK.

TRIMMING- MECHANISM FOR SEWING-MACHINES.

Patented Feb. 6, 1912. Divided and this application filed. DecemberSerial No. 599,796.

To all whom it may concern.

Be it known that I, JOHN P. WVEIs, a citizen of the United States,residing in Nyack, county of Rockland, and State of New York, haveinvented a new and useful Improvement in Trimming Mechanism for Sewing-Machines, of which the following is a description.

My invention relates to sewing machines of the type in which trimming,binding and sewing are done simultaneously.

' Particularly, my invention relates to trimming mechanism by which thework is trimmed preparatory to binding and stitching the binding to thework, whether the latter be woven, knitted, or otherwise produced.

My invention is especially useful on ma chines for binding knit-goods,or looselywoven fabric, because such materials stretch excessively underthe action of the feed and during the application of the binding andalso because they ordinarily present a ragged, uneven and rough edgewhich, if not previously disposed of, will give to the binding, whenapplied, a bulky, uneven and distorted appearance. With these conditionsof the work, diificulty has been found in mechanically applying thebinding evenly and smoothly and in a manner to overcome the tendency ofthe material and binding to pucker or stretch relatively and avoid theuneven and bulky appearance of the edge of the work after the binding isapplied.

It is, therefore, among the objects of my invention to provide certainnovel features of construction and combinations of elements which, inthe machine, will operate and cooperate to trim the edge of the workuniformly and accurately, during the progress of the body-fabric andbinding; and to dispose of the trimming so that it will not interferewith the work or the stitch-forming mechanism.

With these and other objects in view, which will be clearly set forthduring the course of the description, my invention consists in certainelements and combinations of elements, devices and features ofconstruction, all as hereinafter fully set forth and particularlyreferred to in the claims.

In the drawings, forming part of this description: Figure 1 is atop-plan view of the cloth-plate and a horizontal section of thevertical arm of a sewing machine to which my invention has been applied;Fig. 2 is a side elevation of Fig. 1; Fig. 3 is a transverse verticalsection of the machine taken just to the right, in Fig. 2, of thetrimmer-blade, or substantially centrally of the trimming mechanism;Fig. 4: is a perspective view of the guard-plate; and Fig. 5 is aperspective view of the trimmer-blade and its attached shunt-guide.

In the drawings, the numeral 1 indicates the bed-plate of the machine, 2the vertical arm thereof, which'is extended into an overhanging-arm,carrying at its forward end, as usual, the head in which the needlebar 3and presser-bar 4 have their hearing, the needle-bar having avertically-reciprocating movement, as usual, from the vibratory lever,having the depending-arm 5, connected by pitman 6, to the looper 7 ofthe machine.

The drivingshaft 8' extends longitudinally of the machine, and aotuatesthe feeding mechanism, the parts of which are indicated by 9. Theseparts, together with the needle 10, presser-foot 11, cloth-plate 12,throat-plate 13, slide-plate 1 1, carrying binder 15 and guides 16, areall, or may be, the same as similar parts shown in my pendingapplication Serial Number 507 ,368, filed July 13, 1909, of which thiscase is a divi- S1011.

The trimming mechanism is arranged so as to trim the edge of the bodymaterial not only in advance of the stitching, but also in advance ofthe application of the binding to the edge of the body material, thetrimmer and ledger blades, in consequence, being arranged in front ofthe binder, as clearly shown in Figs. 1 and 3.

The trimming mechanism, in its general structure and its mode ofapplication to the machine, is, in all material respects, substantiallythe same as that disclosed in my pending application Serial No. 279,116,filed September 19, 1905, and, in consequence, a detailed descriptionwill not here be given; but the various parts, which are features of thetrimming mechanism of my said application, and which are necessary to anunderstand ingof my present invention, will be presently described. Oneof the important features of my present construction resides in theaddition of a diverter 18, for the trimming which is out from the edgeof the bodymaterial, to the upper arm 19 of the trimmerlever, sa1d leverhaving, at its forwardend, the trimmer-blade, extending at a rightanglethereto, of the same form as innny last said pending application. Thediverter extends horizontally along the length of the trimmer-arm 19 andconforms substantially to the shape thereof and is vertically turned 'orupturned at its rear end to produce the diverter-portion 20, at theupper end of which is the overhanging-guard 21, which preventsthetrimming from rising and runnmgover the diverter-portion. An importantfeature of this constructlon resides in V the fact thatthe diverter,thus combined with the trimming mechanism, can be quickly removed fromthe machine and disposed of when the trimmer is removed; and theparticular advantage of having it connected to p the trimmer-arm is thatwhen, during the operation of themachine, it is desired .to

stop the trimming action of the trimmerblade,-the latter, together withthe diverter, can be quickly, depressed below the cloth I plate of themachine by the mechanism illustratedin Figs. 2 and 3 and fully set forthin my aforesaid application, Serial No. 279,116. This mechanismgenerally speaking consists of the eccentric 30 surrounded by v thestrap 31, the tubular extension 32 of whichreceives within it the rod.33 pivoted at 34 to the lower end of the bell-crank lever 1 the .trimminthe lever 37 1s unlatched, thus breaking the coupling or connectionbetween-the members 32 and 33 and preventing the eccentric 30 fromactuating the bell-crank lever 1719. When this occurs, the diverter andthe cutting-blade of-the trimmer are depressed so that the cutting-bladehasno function; and it requires only that the rod 33 be pressed intothe'extension32 and the latch-lever 37 reset, in ordertoagain setthe-trimmer and diverter into operation.

All this is more fully set forth in my aforesaid application.Another'important feature is that, by connecting the diverter to thetrimmer-arm, said diverter is kept in constant vibration during ,7 tothe shunt-guide and guard-plate shown in the'trimming operation,resulting in keeping the trimming constantly in movement andcausing thesame to be gradually carried away from the trimmer-arm and over Fig. 4.This keeps the diver-terfree from bein' crowded with the trimming andalso seeps the diverterfree from lint since the agitation or vibrationof said diverter willcause the lint to also be carried over to theshunt-guide and guard-plate. This has the important advantage also ofkeeping the driving-shaft and other parts, located below thecloth-plate,: quite free from lint, which, in the present machines,ultimately clogs the mechanism and retards the free and rapid action ofthe machine.

The cooperating shunt-guide and guard i shown inFig. 4 consist of aplate having the longitudinal, outwardly-deflected, lower portion 22,which extends to the bottom of the bed-plate, and, above the same, asubstantially vertical portion 23, provided at its opposite ends withthe longitudinal slots 24, through which attaching-screws 25 are passedand which are screwed into the front edge of the bed-plate, as shown inFig. 2, the slots permitting adjustment of the said plate lengthwise ofthe machine. Above the said vertical portion 23, the guard is formedconcaved to its top edge, as shown at 26.

These features constitute the guard-portion of the plate, since theyprevent lint, dust and other substances from reaching the operatingmechanism of the machine at this point and reX entthe work from engagingsaid mechanism and the latter from throwing oil upon the work. Theshunt-guide port-ion of the plate comprises the inclined Jart 27,connecting at its lower end with the concaved portion 26,'and having at.its upper end the substantially horizontal ledge 28, extendingrearwardly to the vertical portion 29, which forms a continuation of theconcaved portion 26 of the plate. \Vith the plate thus constructed, andin the position shown in Fig. 2, the trimming of the body ma terial willbe cast over onto the diverter 18 and the vibration of the latter willcause said trimming to be gradually and continuously moved, togetherwith all lint produced during the operation of the machine, over to theshunt-guide, down the inclined surface of which said trimming and lintwill rapidly pass and will be deflected away from the machine by theoutwardly-turned, lower portion 22 of said guard-plate.

From the foregoing description, but a brief statement of the mode ofoperation will be necessary and, principally, it should be understoodthat, if knit-goods are operated upon and a differential movement isgiven to the feeding mechanism, the bodymaterial will befed up to thetrimmer, past the binder and to stitching position by the differentialfeed-dog, the binding being applied to the edge of the body-material bythe binder, and the binding stitched in place. The two materials, asthus combined, will be fed away from the stitching position. As thebody-material is fed into and through the machine, if the trimmer is inoperation, the edge thereof will be evenly trimmed and the trimming willnaturally fall to the right side upon the diverter, the rapid vibrationof which will carry said trimming, together with lint which may beproduced, directly over onto the shunt-guide and thence down the inclinethereof to the bottom of the concaved portion 47 of the guard-plate, andthence to the floor, or into a catch-all, which may be supplied for thepurpose.

An important feature of my invention resides in the fact that, at anytime during the stitching and binding, trimming of the body-material canbe carried on in advance of the stitching and binding and can be omittedat the will of the operatorin order to produce special work. Otherimportant features and combinations will have stress laid upon them bybeing mentioned, both broadly and specifically, in the claims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. The combination in a trimming mechanism, of a ledger-blade, avibratory arm, a trimmer-blade carried by said arm at a right-anglethereto, a diverter extending along the length of the arm and of theblade, thus providing a guard portion cooperating with saidtrimmer-blade and a receiving portion cooperating with said arm forreceiving the trimming of the work.

2. In combination, a trimming mechanism including a vibratory blade, adiverter attached to the vibratory blade, and means whereby the trimmerand the diverter may be thrown into and out of action at the will of theoperator during the running of the machine and Without disturbing theaction of the latter.

3. In combination, a trimming device, a diverter for the trimmed edge ofthe material comprising a horizontally disposed plate terminating in anupturned portion and an overhanging guard, and means whereby thediverter may be vibrated so as to cause the said trimmed edge to becarried away from the trimming device.

4:. In combination, a trimming mechanism, a horizontally arrangeddiverter, a shunt-guide, having a ledge, and means for vibrating thediverter whereby the trimming of the work will be caused to travelCopies of this patent may be obtained for laterally away from thetrimmingmechanism, into cooperation with the shunt-guide and over theledge thereof.

5. In combination, a trimming device, a diverter for the trimmed edge ofthe material, and means whereby the diverter may be thrown into and outof operative position at the will of the operator during the running ofthe machine and without disturbing the action of the latter.

6. In combination, a trimming mechanism including a vibratory blade, avibratory diverter cooperating with said blade, and means whereby thetrimmer and the diverter may be thrown into and out of action at thewill of the operator during the running of the machine and withoutdisturbing the action of the latter.

7. In combination, a trimming mechanism, a horizontal vibratory diverterarranged at one side of the trimming-blades of said mechanism, astationary shunt-guide arranged below the diverter in cooperativerelation to the latter, and a guard co6perating with the shunt-guide anddiverter, substantially as described.

8. In combination, a trimming mechanism, a horizontal vibratory diverterarranged at one side of the trimming-blades of said mechanism, saiddiverter having an overhanging guard cooperating with one of saidblades, and a shunt-guide cooperating with the diverter, the latter andshunt-guide acting to carry the trimming away from the trimming-blades.

9. In combination, a trimming mechanism, a horizontal vibratory divertercooperating with the trimming mechanism, a shunt-guide arranged underthe diverter at one side thereof for receiving the trimming from thelatter, and a guard carried by the shunt-guide and cooperating with thedi verter, substantially as described.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

JOHN P. WEIS.

Witnesses:

EDWARD L. RUSSELL, LoUIs R. KRUG.

five cents each, by addressing the Gommissioner of Patents, Washington,D. G."

